Process and apparatus for working metals



F. P. KOBER.

PROCESS AND APPARATUS FOR WORKING METALS, APPLICATION min SEPLQQMSH. RENEWED FEB.24,192|.

1 ,398,028, aiented Novn 22, QZL

UNITED STATasl PATENT orifice.

FRANK ROBERT, Ol; AMTYVILJE, NEW YORK, .ASSGNOR TO HUBER-T ISICETN'F COMPANY, YI[ITC.,`OI:" NEWl YIORK, N. Y., .A CORPORATIDN 0F NEW YGRK.

PROCESS .AND APPARATUS FOR WGRKING METALS.

Application led September 29, 19.17, Serial No. 193,908. Renewed February 24, 1921. Serial }2lo.,4fl7,554.

To all whom t may concern.'

Le it known that I', FRANK P. Konn'r, a citizen of the United States, and residing at Amityville, in the county' of Sutlolk and State otNew York, have invented certain new and useful Improvements in the Process and Apparatus for Working Metals, of

'which the following is a specification, such as lwill enable those skilled in the art to which it appertains to Amake and use the same.

This invention relates to metal working machines such as heating, re-heating, rivet-y ing and welding machines, and my inven! tion consists in the introduction of an electric apparatus whereby a newapparatus or machine is produced, and anew method or process of operation performed in the worklng or fashiomng of metal, and the object of my invention is to provide a simple, practical and efficient process and apparatus for accomplishing the desired result.

In the accompanying drawing, I have shown for illustration a riveting machine of pneumatic, hydraulic or similar type provided with an electric heating apparatus of simple construction and operation Whereby a rivet blank may be electrically heated prior to its 4lasliioning or heading by the heading or plunger lie.

The invention' is fully disclosed in the following specification,ofivhich the accompanying dra-wing forms apart, in-Which the separate `parts of my improvement are designated bysuitable reference characters in each ofthe views, and in Which:-

Figure 1.is a side view oi my improved apparatus with partof the construction in Fig. 2 is a partial section on the line 2 2 of Fig. 1 on an enlarged scale and with parts in a dili'erentposition.

Fig. 3 is a sectional plan view of a contact casing which; I employ;

Fig. 4 is a vievvr similar to Fig. 1, loutl showing a modification; and,

'ig.'5 is a partial section on the line 5-5 ot' Fig. 4 on an enlarged scale and with parts in adiiferent position.

In Figs. 1 to 3, inclusive, I have indicated at 11, the frame of the machine which is U-shaped in form and comprises a back member 12, a top arm 13 and bottom arm 14 said arms being provided at their ends with Specification of Letters Patent.

i 3, and a supplemental cylinder Patented Nov. 2.2, 1921.

heads 15 and 16 respectively. Mounted in the head 15 and vertically movable th/erein, is a plunger die 17, connected with a plunger not shown, and connected with the plunger is a toggle construction 18, composed oi toggle levers pivoted to a toggle socket at 19, said lsocket being provided with a lever 20, connected with a piston rod 21, which is pivoted in a piston movable longitudinally of an air cylinder 22, said piston being not shown. The cylinder 22 is provided with the usual. controlling valve 23 provided with an air supplypipe 24 and a hand operated controlling rod or lever'2.

The toggle construction and the means for operating the same, consisting oi the air cylinder 22' and the parts connected there-With, is the same as usually, employed in machines of this class, and it will he understood 'that any construction of this class may be used for the purpose herein set out. Mounted in the arm 1l is a stationary work piece supporting die the top ot which is provided with a recess 2T, and mounted on the shank portion of said die above the arm 14 is a magnetic coil 2S, placed in connection with any suitable source of electrical supply by Wires 29,

Supported at one side ot' the trame 11, centrally of the back portion thereof, is electrical transformer 30, provided with leads or conducting members ill and 32, and connected with the free end of the lcd 31 is a Contact casing 33, shown in sec in l? f?.

As ably suspended troni the head l5, as shown at 35, and a piston 3G is movable longitudinally thereof, and said piston is provided with a piston rod 37. to the lower end of 'which is connected an electrode 38, with which the contact casing connected, as clearly indicated in Figs. 1,y 2 and 3 of the drawing. The cylinder dei is provided With asuitable valve 39, having n controlling rod or lever 40, and an air supply pipe ell is connected with said valve and with the air supply pipe 2Lio't the cylinder 20.v said air supply pipes 24 andl being in communication with a compressed air tank not shown.

Connected with the free end o the lead 32 is a cylindrical electrode connected with the head 16 of the arm 'le as shown 48, the top face of said electrode lo `vided with a recess Li. adapted to receive the rea. end. of a rivet blank passed through n aperture in the plates lo to beV riveted toether.

onnected with the cylindrical elect-rode l2 is a water supply devicei sli. having;- an intake pipe #i8 and exhaust pipe i9, whereby water may be circulated throujrh the said electrode to coolsame, and the pipe 4:9 is voile-:l around the leadB to cool same, as shown at 50, and connected with the transformer as shown at Connected with the contact casing 33 is a water supply pipe 52, and exhaust pipe' 53, the pipe 53 lieing ada ited .to coil -around the lead 3l to cool the same, as shown at 5l. andronnected with the transformer 30, as shown at. The transformer is provided with a water discharge pipe 5G, and said transformer is adapted to he plared in connection with any source of electrical suppl y by wires 5T. g

llhe traine ll. with the parts connected therewith, as shown, is adapted to be suspended troni a crane not shown, by means of a bale with which a hook 5f) connects, said hook being suspended from said crane Uy chains in the usual manner. and in suspending the machine in this manner, the same may be moved along the work piece or plates 16, as shown, to heat rivet blanks in the usual manner, but it will be understood that the machine may be rigidly connected with a floor or bedplate and the work piece moved therethrough, as is customary 4in varions types of machines of the class to which this invention relates.

From the foregoing' description, the operation will be readily understood on the consideration ot the accompanying drawing; and the following statement :--'l`he normal posi- Ation of the machine is that shown in Fig. l in which a rivet blank fr?) is shown passed through the plates 4o and supported or mounted in the recess ill, in the top ot' theV electrode 42, and the electrode 38 is in its raised position. The electrode 38 is first moved into contact with the protruding end ol' the rivet blank 45 by manipulating the ever el() to admit air into the cylinder 34,'

which moves the piston 36 down 'ardly` and the electrode it? connected therewith, into the position shown in Fig. 2, and held in such position until the blank l is heated to the desired extent. atter which the air supply to the ovl-indelll is shut ofi' to permit the movement if the piston 3G and electrode 38 back into the position shown in Fig. l. after which the machine is moved longitudinally of the work to bring the heated blank into positionbetween the dies 1T and 26, in which operation the heated rivet blank may be held against displacement by grasping the same with prongs or in any other desired manner, and when head of the rivet' blank is in lessees ne recess 2T, the plunger die 1T is moved into engagement with the protrudingr end of said blank by operating` the lever 25 to admit air into the cylinder which operates the toggle construction lt? to depress said die in the usual manner. and the result of this operation is indicated in iull lines in Fig. 2, "where the protruding end ot" the rivet blank is shown headed. K,

By means of the magnetic coil 28, the die 2G is magnctized and serves to hold the plates i6, and rivet blank in firm Contact with said die in the operation of heading said rivet as hereinbofore described.

ln the construction shown in Figs. 4 and 5 \1 have indicated a hand operated electrode (il), which is substituted for the electrode 38, and which is connected with the free end of the lead 3l by means of a Contact. casing 61, with which the water supply and discharge pipes 52 and 53 are connected, and a lever. device G2 is pivoted to the ar1n 13 at (33, and provided with oppositely directed arms 64 and 65. the arm 64 being connected with the contact casing 6l as shown at 66, and a weight 6T is connectedwith the end l)ortion ot' the arm G5. The arm G4 is provi( d adjacent to the end thereof, with a handle member, whereby the electrode 60 may be depressed against the action ot' the weight (3T, to bring it in Contact with rivet blank 45 as will be readily understood.

The construction shown in Figs. 4 and 5 shows a hand ope 'ated electrode which is substituted for the pneumatically operated electrode 38, as will be readily understood, but the operation of the machine as shown in- Figs. l and 5 will be exactly the same as that shown in Figs. l and 2 thereof, as will `be readily understood.

With my improvement, a work piece may be heated to the desired extent by electrodes brought in Contact therewith, pneumatically or otherwise, and then fashioned by dies brought into alinement. therewith, or said work piece may be moved when heated into position between forming' dies, as will be readily understood, and while I have shown certain details of construction for accomplishing the desired result, it will be understood that my invention is not limited to the various combinations and arrangement Aof parts hereinbefore shown and described, and changes therein and modifications thereof, may be made within the scope of the appended claims without departing from the spirit of my invention or sacrificing its advam tages.

A lhe steps of the process herein described, .which consists in supportingv a Work piece in the form of a rivet blank on one electrode, moving` another electrode into` Contact with said blank to heat .the same, and then fashioningf said heated blank by forming dies brought into alinement therewith, produce a simple and very efficient method of operation and form a perfect rivet but it will be understood that my invention is not` limited to the process of heating and heading rivet blanks as the process herein described maf,y be used for the purpose of Working metal generally speaking, as will bereadily 'understood.

Having fully described my invention what l claim as new and 'desire to secure by liet ters Patent, is

l. The method. of Workingr metal, which consists in suitably'supporting a Work piece inv one electrode, moving another electrode into Contact with said workpiece. to close the circuit betvveen said electrodes to heat said 'Work piece, moving said heated n'ork piece onto a stationary die, and fashioning said Work piece by plunger die movable toward and from said stationaryr die.

2. The method of riveting a pluialit)v of parts together, which Consists in passing a rivet blank through an aperture in said parts, supporting;r the head end of said rivet blank in an electrode, moving another elec trode into Contact with the protrudingu end of said rivet blank to heat said blank. moving a supporting .die into position to snp port said heated rivet blank'. and moving a plunger die toward the heated blank snpported by said first named die to head 'the same. f

El. rlh-e method of riveting' n plurality of parte together, which consists in passing a rivet blank through an aperture in said parts, supporting,T the head end of said rivet blank in an electrode7 moving' another eleorode into rontaet with the protruding end ot' said rivet blank to heat said blank moving a supporting' die into position to support said heated rivet blank and said parts, inagnetirally holding said blank and parts 'in irm Contact with said dies and moving' a plunger die toward the heated blank supported by said first named die to head the same.

l. 'lhe method ol rivetingr a plurality of parts together` which ronsists in passing' a rivet blank through an aperture in said parts` electrically heating' said rivet blank by electrodes brought into Contact therewith, moving' termine' dies into operative position with said heated blank and headino' said heated rivet blank by theoperation of one ol said dies toward the other.

5. The eombination with a maehine oi the class desrribed having a pneumatirally operated plunger die, ot an electric heating apparatus independent of said die, and adapted to heat a work piece priorI to its Aashioning by said plunger die.

6. The rombination `vith a machine of 'the class described havinga pneun'satieally operated plunger die, ol" an eleet'ic heatingh apparatus independent oi said die, and coniprising a. pnenniatieally operated electrode. adapted to heat a .vork piece prior to its fashionino b v said plunger die.

T. in a maehine for heating metals electrically prior 'to shaping the same, the rombination with a plunger die and work piet-e supporting die oi a stationary and a mov able ele-strode, mounted at one side ol said dies, said stationary electrode being' adapted to support e Work pies and means tor moving said movable electrode in Contact 'with the Work piece supported in said stationzn,r electrode to heat the same. l

8. in a machine for heating; metals eleotrieallyY prior to shaping the seme, the rom- 'bination with a plunger die and n'ork piece supporting die of a stationair?,v and a movable electrode, mounted at one side ot said dies, said stationary electrode beingr adapted to support a work piece, means for mov-v said movable electrode in eoniaet ivith the workpiece supported in said stationary electrode to heat the saine, and means for bringing said dies inio alinement with said heated vvorl piece, end means for operating' said olnnger die to fashion said 'work piece.

9. lie metlio'd of riveting a plurality oi' parts together 'which eonsist-s i passing the rivet blank through said parts, heating said rivet blank by 'passing an electric Current therethrough, a supporting die and plunger die into alinenient with said heated rivet blank and operei'zing;v said plunger die to head said rivet blank.

i0. The mehod of riveting a pluralityY of parts together, which consists in passing a rivet blank through said parts, supporting the head end oi' said rivet blank in an electrode.) heating said rivetilank by a pneuinatioally operated e et l trede broughtinto Contact with the. rivet blank supported in said electrode, and heading said rivet blank by a pneumatieally operatedl plunger.

ll. in a machine oli the @lass desoribed. a frame, a stationary die and a nlunii'er die mountet in saiitiframe` space( electrodes mounted on one side ol t rame7 and adapted to heat a work piece suiported therebetween, means 'lor moving the niachine to bring said dies into alinement with said heated work pieoe and means for operating said plunger die to fashion seid Work piece.

l2. In a machine of the Class desoribed, a taime, a plunger mounted therein,r a plunger die in operative ronnertion with said plunger. a stationary die mogn'ited in said 'trame7 an eleetrie transformer mounted at one side ot the frame and provided with leads with the ends ot which are Connected electrodes. one et' said electrodes being` adapted 'to surniiort4 a. .vork piene, and means for moving the other electrode into Contact with the Work piece in said named electrode heattgie f' 1.3; ln a machine of the class described, a frame, plunger mounted therein, a plunger die in operative connection with said plunger, a stationary die mounted in said frame, an electric transformer mounted at one side of the frame and provided 'with leads with the ends of :which are connected electrodes, one of said electrodes being adapted to support a Work piece, means for moving the other electrode into contact with the Work piece in said first named electrode to heat the same, and means Jfor cooling' said electrodes.

lll. ln a machine of the class described, a frame, a. stationary die and a plunger die mounted in said `trarne, spaced electrodes mounted on one side oi' the trame, and adapted to heat a Work piece supported therebetween, means for moving the machine to bring said dies into alinement with said heated Work piece, means for operating said plunger die to :fashion said Work piece, and

means for cooling said electrodes and said' transformer.

' l5. ln a machine of the class described, a stationary electrode adapted to support a. Work piece, a pneumatically operated electrode movable toward and from the vvorlr piece supported in said stationary electrode to heat the same, and a pneumatically operated plunger die adapted to be brought into contact with said heated Work piece to fashion the same.

16. In a machine of the class described, a. stationary electrode adapted to support a vvorl; piece, a pneumatically operated electrode movable toward and from the Work piece supported in said Vstationary electrode to heat the same, a stationary die and a plunger die, means orbringing said dies intoV alinement with said heated work piece and means for operating said plunger die to fashion said heated workpiece.

17 ln a machine of the class described, a stationary "lie and a plunger die, a stationary electrode and amovable electrode mounted at one side oi said dies, pneumatical means for operatingsaid movable electrode to heat a work piece supported in said stationary electr-ode, means for bringing said dies into alinement 'with said heated Work piece and pneumatical means for operating said plunger die to fashion said heated Work piece.

18. in a machine of the class described for rivet-ing a plurality of parts together byA rivet blanks passed therethrough, a stationary electrode adapted to support a rivet blank, a pneumatioally voperated electrode Leganes movable toward and from said rivet blank and adapted to heat the same, and means independent ot' said electrodes Vtor Vfashioning said heated rivet blank.

19. In a machine of the class described for riveting a plurality of parts together by rivet blanks passed therethrough, a stationary electrode adapted to supporta rivet blank, a pneumatic-ally operated electrode movable toward anilfrorn said rivet blank and adapted to heat the same, a stationary die and aplunger die, means for moving said dies into alinement with said heated rivet blank and pneumatical means for operating said'plun'ger die to head said heated rivet blank.

20. ln a machine of the class described, a stationary electrode adapted to support a work piece and an elect-rode movable toward and from said stationary electrode and adapted to heat the vvorlr piece supported therein, and means independent of both said electrodes for fashioning said heated Work piece.

2l. The method of ,riveting a' plurality of parts together, which consists in passing a. r' et blanlr through said parts, heating said rivet blank by passing an electric current therethrough, magnetically supporting said blanlr and parts` and moving a. plunger die toward and from said rivet blank to head the same.

22. The method of rivetinga plurality ot parts together, which consists in passing a rivet blank through said parts, heating said rivet blank by passing an electric current therethrough, bringing a stationary die and plunger die into alinement with said heated rivet blank, magnetically holding said rivet blank in irin Contact with said parts, and operating said plunger die to head said heated rivet blank.

23. The method of riveting a plurality ot parts together, which consists in passing a rivet blanlr through said parts, supporting said rivet blank in a stationary die, magnetieally holdirii1 said rivet blank in iirm contact with said parts, and hea-ding said rivet blank by a plunger die movable toward and from the same, i

ln testimony that l claim the foregoing as my invention l have signed my name in presence of the subscribing witnesses this 25th day of sept., un?,

` FRANK l). KCl-BERT.

Witnesses A. V. Z. Crimine,

Gao. if, i oernn, 

